xref: /linux/tools/perf/scripts/python/stat-cpi.py (revision 245f0db0de926601353776085e6f6a4c974c5615) 
1#!/usr/bin/env python
2
3data    = {}
4times   = []
5threads = []
6cpus    = []
7
8def get_key(time, event, cpu, thread):
9    return "%d-%s-%d-%d" % (time, event, cpu, thread)
10
11def store_key(time, cpu, thread):
12    if (time not in times):
13        times.append(time)
14
15    if (cpu not in cpus):
16        cpus.append(cpu)
17
18    if (thread not in threads):
19        threads.append(thread)
20
21def store(time, event, cpu, thread, val, ena, run):
22    #print "event %s cpu %d, thread %d, time %d, val %d, ena %d, run %d" % \
23    #      (event, cpu, thread, time, val, ena, run)
24
25    store_key(time, cpu, thread)
26    key = get_key(time, event, cpu, thread)
27    data[key] = [ val, ena, run]
28
29def get(time, event, cpu, thread):
30    key = get_key(time, event, cpu, thread)
31    return data[key][0]
32
33def stat__cycles_k(cpu, thread, time, val, ena, run):
34    store(time, "cycles", cpu, thread, val, ena, run);
35
36def stat__instructions_k(cpu, thread, time, val, ena, run):
37    store(time, "instructions", cpu, thread, val, ena, run);
38
39def stat__cycles_u(cpu, thread, time, val, ena, run):
40    store(time, "cycles", cpu, thread, val, ena, run);
41
42def stat__instructions_u(cpu, thread, time, val, ena, run):
43    store(time, "instructions", cpu, thread, val, ena, run);
44
45def stat__cycles(cpu, thread, time, val, ena, run):
46    store(time, "cycles", cpu, thread, val, ena, run);
47
48def stat__instructions(cpu, thread, time, val, ena, run):
49    store(time, "instructions", cpu, thread, val, ena, run);
50
51def stat__interval(time):
52    for cpu in cpus:
53        for thread in threads:
54            cyc = get(time, "cycles", cpu, thread)
55            ins = get(time, "instructions", cpu, thread)
56            cpi = 0
57
58            if ins != 0:
59                cpi = cyc/float(ins)
60
61            print "%15f: cpu %d, thread %d -> cpi %f (%d/%d)" % (time/(float(1000000000)), cpu, thread, cpi, cyc, ins)
62
63def trace_end():
64    pass
65# XXX trace_end callback could be used as an alternative place
66#     to compute same values as in the script above:
67#
68#    for time in times:
69#        for cpu in cpus:
70#            for thread in threads:
71#                cyc = get(time, "cycles", cpu, thread)
72#                ins = get(time, "instructions", cpu, thread)
73#
74#                if ins != 0:
75#                    cpi = cyc/float(ins)
76#
77#                print "time %.9f, cpu %d, thread %d -> cpi %f" % (time/(float(1000000000)), cpu, thread, cpi)
78